Australian health authorities warn against mixing Covid vaccine types

Concerns raised that some people may be cancelling their second AstraZeneca dose hoping to obtain a shot of Pfizer instead

• Follow our Covid live blog for the latest updates
• Hotspots: NSW; Vic; Qld
• Vaccine rollout tracker; get our free news app; get our morning email briefing

The evidence is strongest for receiving two doses of the same Covid-19 vaccine, rather than mixing different types, medical authorities have said amid concerns that some people may be cancelling their second AstraZeneca dose in the hope of securing a shot of Pfizer.

As outbreaks of the Delta variant affect New South Wales and Victoria, people are being urged by state premiers and health authorities to get vaccinated as soon as possible with whatever vaccine is available, and to show up to their existing first and second-dose appointments.